Why humans can't live without machines?

Answer 1

ANSWER 1

Birds can fly because they have adapted to their environment in order to survive. Some adaptations a bird has made are: hollow bones, thin legs,a light beak, and strong flying muscles that humans don't have.

Us, we are too heavy for our strength, or too weak for our weight to be able to fly.

Answer 2

With regard to flying, birds have many advantages over humans:

• They have wings. It is difficult to fly without wings, unless you can jump really fast and far.
• Bird's feathers are very light, and are one of the most complex body coverings of any vertebrate. Human body hair and skin cannot contribute to any human's desire to fly.
• Birds' skulls are proportionately smaller/lighter in relation to their body weight than a human's skull. So they don't have so much brain to carry around.
• Birds have no teeth or jaw bone, which all helps in reducing their comparative body weight ratios. n.b. Ostriches actually have a higher ratio of 'bone weight to body weight' than humans. However, ostriches can't fly.
• Birds' muscles for moving their wings are proportionately stronger than a human's arm muscles.
• Bird's wings are lighter than a human's arms.
• Humans even have muscles in their arms, but most of a bird's muscles are across its chest, reducing the weight of its wings to something significantly lower than the weight a muscled 'arm' would be. Consequenly birds, whilst good at flying, aren't very good at Wrestling, boxing, karate, kung fu, arm wrestling, lifting heavy weights, drawing or writing books.

Answer 3

A bird's heart beats up to 420 times per minute but a human's heart beats only 72 times on an average. So our heart cannot produce sufficient energy required to make us fly.

Answer 4

It's mainly about strength-to-weight ratio. When living things get bigger, they get heavier faster than they get stronger. A muscle that's twice as strong is four times as heavy, and will need four times the blood flow, oxygen and nutrients to be as effective as the smaller muscle. Something human-sized that's built as a human just can't get the required strength-to-weight ratio - even if we would make us some really slick wings.

Answer 5

We don't live in a cartoon or Anime where such thing are made possible.
because God made us humans most people prefer that we are not animals but we are technically but for animals without Wings??

Answer 2

Humans have evolved to rely on machines and technology for various aspects of daily life, such as communication, transportation, and healthcare. Machines help improve efficiency, accuracy, and productivity in many tasks that would be much more difficult to accomplish manually. In modern society, the reliance on machines has become ingrained in the way we live and function.

Answer 3

well first of all humans don't have the proper bones, birds bones are hollow so they are lighter, also humans havn't evolved enough to have wings, but in millions of years humans may grow wings

Answer 4

By themselves, unassisted - no.

It's mainly about strength-to-weight ratio. When living things get bigger, they get heavier faster than they get stronger. A muscle that's twice as strong is four times as heavy, and will need four times the blood flow, oxygen and nutrients to be as effective as the smaller muscle. Something human-sized that's built as a human just can't get the required strength-to-weight ratio - even if we would make us some really slick wings.
no because they dont have wings nor can pigs cant either,and icurus is son off someone speciel.!!!
no try jumping off something and flapping your arms!!! JK!

Answer 5

By ourselves, unassisted, on Earth - we can't. Unless you think of balloons or jetpacks.

It's mainly about strength-to-weight ratio. When living things get bigger, they get heavier faster than they get stronger. A muscle that's twice as strong is four times as heavy, and will need four times the blood flow, oxygen and nutrients to be as effective as the smaller muscle. Something human-sized that's built as a human just can't get the required strength-to-weight ratio - even if we would make us some really slick wings.

Answer 6

W/o gravity, flying is EASY. Gravity is the force that pulls us to the ground. Remove that and we'd be able to almost float on air. Flapping our arms still wouldn't do the trick, but with the help of some crude wings we'd be able to swim - if not fly - through the air.

Answer 7

No, humans can not fly. We don't have the correct abilities and body structure to be able to fly without a plane, jet pack, or holding onto a really big bird.

Answer 8

Sure.

You'd need a glider, some thermals, or maybe an updraft and you're all set.

Answer 9

because we don't have wings.

Answer 10

gravity